Hydrazoic acid

Base Information

• Chemical Name: Hydrazoic acid
• CAS No.: 7782-79-8
• Deprecated CAS: 127229-27-0,57077-96-0,227798-96-1
• Molecular Formula: HN₃
• Molecular Weight: 43.028
• European Community (EC) Number: 231-965-8
• UNII: 6P5C4D5D7I
• DSSTox Substance ID: DTXSID20884425
• Nikkaji Number: J2.255.096I
• Wikipedia: Hydrazoic acid
• Wikidata: Q408925,Q1661369
• ChEMBL ID: CHEMBL186537
• Mol file: 7782-79-8.mol

Synonyms:hydrazoic acid

Chemical Property of Hydrazoic acid

Chemical Property:

• Melting Point: -80oC
• Boiling Point: 37oC
• PKA: 4.72(at 25℃)
• PSA: 61.24000
• Density: 1.09(25/4oC)
• LogP: 0.42796
• Water Solubility.: very soluble H2O [HAW93]
• XLogP3: 1.7
• Hydrogen Bond Donor Count: 1
• Hydrogen Bond Acceptor Count: 2
• Rotatable Bond Count: 0
• Exact Mass: 43.017047045
• Heavy Atom Count: 3
• Complexity: 23

Purity/Quality:

99%, ^*data from raw suppliers

HYDRAZOIC ACID 95.00% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Dangerous explosion risk when shocked or heated. Strong irritant to eyes and mucous membranes. TLV: CL 0.1 ppm (vapor)
• Hazard Codes: Dangerous explosion risk when shocked or heated. Strong irritant to eyes and mucous membranes. TLV: CL 0.1 ppm (vapor)

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Other Uses -> Explosives
• Canonical SMILES: N=[N+]=[N-]
• Description: Hydrazoic acid or hydrogen azide is a dangerous explosion risk when shocked or heated. It is the gas-forming agent in many air bag systems in automobiles and escape chutes in airplanes.
• Physical properties: Colorless, volatile liquid; pungent disagreeable odor; density 1.09 g/mL;solidifies at -80°C; boils at 37°C; highly soluble in water; soluble in alkalies,alcohol and ether; pKa4.6 at 25°C.
• Uses: Industrially in preparation of heavy metal azides for shell detonators. Hydrazoic acid is used in making heavymetal azides for detonators. It forms readilywhen sodium azide reacts with acid orhydrazine is mixed with nitrous acid.

Technology Process of Hydrazoic acid

There total 161 articles about Hydrazoic acid which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 85.0%

silver(I) azide (13863-88-2) → hydrogen azide (7782-79-8) + silver (7440-22-4)

Guidance literature:

In toluene; byproducts: N2; High Pressure; AgN3 loaded into reactor with solvent, pressurized to 1 atm with N2, heated to 130°C and held overnight, then raised to 200°C and held for 1 d; filtration, washing, drying under vac.;

DOI:10.1016/S0025-5408(02)01028-0

Reference yield: 6.0%

sodium azide + NOSO2OH → hydrogen azide (7782-79-8) + dinitrogen trioxide (10544-73-7,96607-26-0) + nitrosyl azide (62316-46-5) + Nitrogen dioxide (10102-44-0) + dinitrogen monoxide (10024-97-2)

Guidance literature:

With sulfuric acid; byproducts: N2; addition of NOSO2OH in concd. H2SO4 at -195.8°C, next handle from -30 to -35°C for 8-24 h;

DOI:10.1021/ja01550a004

Reference yield: 5.0%

sodium azide + nitric acid (7697-37-2,78989-43-2) → hydrogen azide (7782-79-8) + dinitrogen trioxide (10544-73-7,96607-26-0) + nitrosyl azide (62316-46-5) + Nitrogen dioxide (10102-44-0) + dinitrogen monoxide (10024-97-2)

Guidance literature:

With sulfuric acid; byproducts: N2; addition of 1:1 mixture of HNO3 - H2SO4 at -195.8°C, next handle from -30 to -35°C for 8-24 h;

DOI:10.1021/ja01550a004

upstream raw materials:

water

nitric acid

hydrogen fluoride

iron(III) chloride

Downstream raw materials:

azide radical

trans-1,2-difluorodiazine

imino radical

NH₂ radical

Refernces

• 1、 Adam,Hack,Olzmann. "The rates of the elementary reactions of NH(a1 Δ) with NH3(X) and HN3(X). The temperature dependences". . p. 197 - 211. Retrieved 2005.
• 2、 Hack, W.,Rathmann, K.. "Collision-Induced Intersystem Crossing of NH(a1Δ, v''= 0.1) by N2 and Xe: Temperature Dependence (N2) and Product States (N2, Xe)". . p. 47 - 52. Retrieved 1992.
• 3、 Chen,Hsiao,Hsu,Wu,Yen,Wei,Chen,Chen. "Epitaxial growth of inn films by molecular-beam epitaxy using hydrazoic acid (HN3) as an efficient nitrogen source". . p. 6755 - 6759. Retrieved 2007.
• 4、 Henshaw, Thomas L.,Manke Ii, Gerald C.,Madden, Timothy J.,Berman, Michael R.,Hager, Gordon D.. "A new energy transfer chemical laser at 1.315 μm". . p. 537 - 544. Retrieved 2000.
• 5、 Schulz, Axel,Villinger, Alexander. "Binary Zinc Azides". . p. 2032 - 2038. Retrieved 2016.
• 6、 Sood, R. K.,Nya, A. E.. "-". . p. 491 - 494. Retrieved 1981.
• 7、 Linnen,Coombe. "Mechanism of the photochemically induced reaction between Ga(CH3)3 and HN3 and the deposition of GaN films". . p. 88 - 90. Retrieved 1998.
• 8、 Heidberg,Hustedt,Oppermann,Paszkiewicz. "Adsorption of hydrogen azide on the NaCl(100) single crystal surface. Orientational and translational ordering of the HN3 monolayer as revealed by PIRS, LEED and spectra simulation". . p. 669 - 699. Retrieved 2001.
• 9、 Yuan, Kaijun,Cheng, Yuan,Wang, Fengyan,Yang, Xueming. "Photodissociation dynamics of HN3 and DN3 at 157 nm". . p. 5332 - 5337. Retrieved 2008.
• 10、 Pahnke, Ralf,Ashworth, Stephen H.,Brown, John M.. "". . p. 179 - 183. Retrieved 1988.